body {
    background-color: #eee;
}

.nav {
    width: 1400px;
    height: 760px;
    margin: 20px auto;
    border-radius: 40px;
    background-color: #fff;

}

.nav-l img {
    width: 690px;
    height: 340px;
}

.nav-l {
    padding: 10px;
}

.nav-l,
.nav-r {
    float: left;
    width: 690px;

    height: 700px;
    border-radius: 40px;
}

.nav-r {
    padding-left: 20px;
}

.l-t,
.l-f {
    width: 100%;
    height: 340px;
    border-radius: 20px;
    margin-top: 20px;
    overflow: hidden;
}

.nav-r p {
    font-size: 15px;
    margin: 10px 0;
}

.btn {
    height: 150px;
    width: 690px;
    overflow: hidden;
    padding: 20px 0;
    position: relative;
}

.hot {
    position: absolute;
    top: 40px;
    right: 40px;
}

.tou {
    width: 120px;
    height: 120px;
    background: url(../img/ren.png) no-repeat;
    background-size: cover;
    border-radius: 60px;
    float: left;
}

.tits,
.titss {
    height: 60px;
    width: 570px;
    line-height: 60px;
    float: left;
    font-size: 24px;
    text-align: left;
    padding-left: 40px;
}

.titss {
    font-size: 14px;
}

h2 {
    text-align: center;
    font-size: 42px;
    height: 80px;
    line-height: 80px;
}